Enterprise Vault Migration Single server to Cluster

No, if you read the technote on converting you will see the first thing it says is "Enterprise Vault should already be configured in a non-clustered configuration, and it must not already be part of a cluster.".

You need to move EV to a 64 bit machine and then follow the steps in the technote to convert it to the cluster.

Can i do one thing

without doing any thing to running EV.

I make new EV Server with MS Cluster and do all new configuration and then in last i copy my index and archive data to new assign storage connected to new EV Server.

Regards
Saqib

Move EV first, test make sure it is all working then covert to a cluster.  That way if you are having problems you are limiting the number of things that could go wrong. 

Don't get in a hurry and rush the process as that can lead to steps missed and mistakes made.

As you said first i need to move my EV to 64bit Server using server migration wizard thn 

i move tht to Microsoft Cluster. 

Or i install Microsoft cluster on new EV machine then fresh install EV 10 and import the setting from server migration wizard. can i dot that.

Regards
Saqib